Another tire grip question

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Carl Fogel said:

For both clarification and amusement, here's the post from John to
which I alluded:

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http://tinyurl.com/4svap

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Apart from what we like to call the excremental vision when
discussing Dean Swift's works, note John's salutation.

I referred to your use of these epithets. I expected better.

You're so anxious to insult people (Carl, Mark, etc.) that you can't even
follow an EASY thread. (Hint: look again.)

Bill "funniest posts are when you accuse others of being rude" S.

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Matt O'Toole said:

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> If we take it that tire thread has nothing to do with tire grip
> and it is the tire compound that is the overriding factor what is
> the effect of ...

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> ... very lightly sanding a tire (a slick tire that is)?

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You'll wear it out faster.

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> I've heard that some racers do this for wet weather races - it
> seems rational but is there a scientific basis for this improving
> grip?

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It's a racer legend. It won't help.

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Do new tires have some kind of slick, mold release goo on them, that
sanding could remove?

Mold release on tire tread will definitely wear rapidly in the first
hundred yards of riding or sooner. Preserving the mold release of a
slick tread for the first turn of a race would be difficult because
as the bicycle leans into that turn, the surface gloss is gone.
Besides, I can't imagine someone mounting a new tire and carrying the
bicycle to the starting line for a virgin tread start.

I think this has gotten to a hypothetical acme about now. Tire
preparation is part of the compendium of bicycle lore.

Jobst Brandt
[email hidden]

I think it lasts a bit longer than one corner. A friend of mine
slapped on a brand new set of Michelins, rode about 200 meters to a 90
degree corner, washed out the front wheel and broke his collarbone.

Now he's ridden that same corner about 2500 times, I'm guessing the
mold release might have had something to do with it ;-)

Of course sometimes his cornering is a bit aggressive... I was watching
him in the SFGP a couple years back and coming on to Embarcadero off
the hill (don't remember the street name) on the last lap he actually
slid the *front* wheel about 3 or 4 inches, and didn't dump the bike.
That surpised the hell out of me and was lucky for him, as there's a
12" tall curb there and sliding into it would have been rather painful.

"Bill Lloyd" <[email hidden]> wrote in message
news:2004103013581550073%thanksforno@spamcom...

Quoted message said:

On 2004-10-12 21:28:41 -0700, [email hidden] said:

Of course sometimes his cornering is a bit aggressive... I was watching
him in the SFGP a couple years back and coming on to Embarcadero off the
hill (don't remember the street name) on the last lap he actually slid the
*front* wheel about 3 or 4 inches, and didn't dump the bike. That
surpised the hell out of me and was lucky for him, as there's a 12" tall
curb there and sliding into it would have been rather painful.

Sounds like your friend is a dangerous rider. I wouldn't want him riding in
my pack!